Frequency doubling laser generating device

A generation device and frequency doubling technology, which is applied to lasers, laser components, phonon exciters, etc., can solve the problems of destroying the narrow linewidth characteristics of lasers, and the inability to obtain high-power single-frequency or narrow-linewidth frequency-doubling lasers, etc.
CN112821176AActive Publication Date: 2021-05-18SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
Publication Date
2021-05-18

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Abstract

A frequency-doubled laser generating device comprises a single-frequency laser, a phase modulator, a laser amplifier, a spatial isolator and a frequency doubling device which are connected in sequence, and further comprises a signal generator which generates radio frequency or pseudo-random signals and is used for driving the phase modulator and modulating single-frequency laser with the output phase amplitude being Npi, after being amplified by the laser amplifier, the single-frequency laser is emitted into the frequency doubling device through the spatial isolator, single-frequency or narrow-linewidth frequency doubling light with the laser phase modulation amplitude of 2Npi is obtained, and N is an odd number. The phase modulator can realize phase modulation in a wider wavelength range, and meanwhile, high-power low-frequency fundamental frequency light obtained by the laser amplifier is subjected to frequency doubling to obtain single-frequency or narrow-linewidth frequency doubling light, so that the structure has the advantages of being simple, flexible in design and the like; a new technical scheme is provided for high-power and high-stability single-frequency or narrow-linewidth laser frequency doubling, and high practical value and application prospects are achieved.
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Description

technical field

[0001] The invention relates to the field of optoelectronic technology, in particular to a frequency-doubled laser generating device for phase-modulated fundamental frequency light, which is used for generating frequency-doubled laser with high spectral intensity. Background technique

[0002] Visible and ultraviolet lasers have important applications in the fields of display, quantum information technology, laser remote sensing, astronomy and geophysics, biomedical imaging and therapy, industrial processing, and cold atoms. Infrared laser frequency doubling is the most common method. Laser extracavity frequency doubling technologies mainly include single-pass frequency doubling and resonance frequency doubling, which are effective ways to obtain high-power visible light and ultraviolet lasers. In laser frequency doubling, to achieve high nonlinear conversion efficiency, the fundamental frequency light is required to be a single-frequency or narrow-linewidth ...

Claims

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